Locomotive truck



LSEQSSQ Oct. 7 1924.

J. G. ELUN'EFl LoooMoT'IVE TRUCK Filed Aug. 18, 1922 2 Shee'ts--SheetI 1 WITNESSES Patented 0st. 7, i924.

'narral stares isiasaa PATENT FFEQ,

LOCOMOTIVE TRUCK.v

Application 'filed lAugust 18, 1922. Serial No. 582,748.

To all wlznm t may concern.'

Be it kn .wn that L JAMES G. BLUNT, a citizen ofthe United States, residing at Schenectady, in the countyv of Schenectady and State of New York, have invented a certain new and useful Improvement in Locomotive Trucks, of which improvement the following is a specification.

My invention relates to four wheeled trucks of the pedestal type, for locomotives or other railroad vehicles. Under usual running 4conditions, locomotive trucksare subjected to very severe vibratory action, which induces great strain upon all joints that are fastened by the use vof bolts or pin connections, and failures have occurred due to parts separating or joints becoming loose.

One of the objects of my invention is to 'reduce the number of separate parts, and thereby eliminate, as far as possible, the application of bolted or pin connected joints. Another object is to equalize the weight upon the journals, without the employment of separate equalizer bars, While at' the same time, permitting the Wheels to follow the vertical inequalities of the track surface. comprises an improved construction of railroad truckipedestals, and means forautomatically lubricating the same.

The improvement claimedpis hereinafter 'fully set forth.

In the accompanying drawings: Figure 1 is a half plan vie'w' of a locomotive truck,

embodying my invention; Fig. 2, a View, half in side elevation, and half in vertical longitudinal section, of the same; Fig. 3, a vertical transversek section, the left hand half 'being taken on the line a a of Fig. 2, and the right hand half on the line b b of the same igure; Fig. 4, a similar section, taken on the line c c of Fig. 2; Fig. 5, a similar section, taken on the line (Z d of'Fig. 2; and,

Fig. 36, a section on an enlarged scale,l

through one of the truck` pedestals,

ln the practice of my yinvention, referring descriptively to.the` specific:` embodiment thereof which is herein exemplid, I provide side frame members, or girders, 1, one at each side'of the, truck, and' each being 'formed of a single integral casting, rigidly connected ati its ends with the journal housings, 2, whici enclose the journal bearings upon the axles, 3. The girders or frame Another feature of my inventionv members, 1, are preferably hollow, bein` formed with side Walls, spaced apart an joined by flanges at top and bottom. They are also preferably cast integral with .the journal housings, thereby eliminating boltcd joints.

The equaling springs, Ll, which are )referably of se i-elliptic form, are located between the Walls ot' the side members, and are suspended by means of the hangers, 5, which may be of the usual construction. .65 The main frame, 7,' which is preferably formed in one integral casting having side portions and' transom, rests at its ends upon the centres ofthe elliptic springs, and is. provided at its four corners with pedestal connect-ions (zo-operating With corresponding parts carried by the girders or journal housings. The usual centre plate, 12, is located at-the middle of the main frame, and may be supported thereon by means of suitable lateral motion connections, 13, which do not form part of my invention.

ln theV preferred construction, the-girdcrs,l l, at or near the journal housings, 2. are provided with cylindrical openings in which are fitted bushings, 8, for receiving pedestal pins, 6, which are rigidly mounted in, and depend from, the main frame, 7, at its four corners.. The interior bores of the bushings, 8, are preferably revcrsely tapered, as shown in Fig. 6, in order to permit the anw gular motion of the pins, 6, withoutexcessive lateral or longitudinal motion. By means of this construction the trame guides the trucky through the engagement of the pedestal pins in the bushings, and Dthe side girders are ner'uitted to oscillat'c freely with respect to veriical inequalities in the sui face of the track, without binding or cramping the .@pde/stal pins. For the purpose of lubricatipg the pedestal hearing, an oil chamber or pocket, 9, is formed at the bottoni of 'the' pedestal opening or bushing, which chamber may be filled with oil upto afpoint 'abve the lower end of the pedestal ico pin'. One or more passages, 1.0,.may also be provided'lfor permitting a ,circulation of oilivfrom the chamber, 9,- to a recess, l1', at the upper portion of the bearing during the veru tical slidingf movement, of the pedestal pin Within the bushing in which it acts as a plunger for forcing the oil through the said passages. In this manner the pedestal bear,

ing is nuliomaticully lubricnfied., the drained back inao the chamber, 9, so

@prevent wusye and cconoinize lubrimunlv In th@ improved tinck construction heririn Set forth, lle clliptic springs perform the double function of springs and squalizers, climinating the use of separate equzih izing bars and cqunlizing tha weight upon cach joui-nail. This ccnstrucion also permits each wheel tu follow vertical undulaicns in lhc track surface, and maintain :i constant load on auch journal bearing' while accommodating itself to the track variations.

l claim as my invention und desire, 'to cure hy Letters Patent:

i. ln n four 'whe/sled lruck, 'the combina tion with side girilers, one at cach siclc of he truck, comprising spaced parallel side walls, and having journal linusings rigidly cnnncctcd hercwit'h, nl' a rigid frame having vertical sliding pedestal connections with said girders; and equalizing springs, locaiccl between thc side Walls of the gilda-rs, und couplcd, at; their ends thai-cto, and supporting the frame al; the middle of their lengh.

En n four wheeledtruckth@ cmnliimition, with side gir'lars, one it each side -the truck, comprising spaced parallel sicls walls and journal housings, of n ri. rid frame, having vertical sliding pedestal?. conne@ tions withA Suid girders; and equnlizing springs, suspended nt hsii ends, on und l eibweei the side walls of the girrlers, and supporting szaid iframe n.5 the middle ci hnliengh.

ln :L finir Wheeled rucli, hc combination, with Side girdcrs, sach. ifornml cile, single in'egrul casing, including journal housings it its ends, und having pedestal. openings, of a. rigid brains, having psdcsul :nilwny iiuclf: pcdes-xbul, cnmpris' member, rigidly coiinnccd tn jsui-nal l ing und having n 'vsricnl opening; 2i. hanne, having a @in slida/biy inountef?. suini n suing.,

5. railway' tr member rigidly connai-,ted ro the) housing und having n cylindrical @peni bushing therein., hui/ing n, upeerl inicri hors; and. n peiiesnl. pin, mounted in s u bushing.

6. A railii'uy @ruck pedestal, comprisinfr member rigidly connsct'ed to the jouin housing, and having n, v-crtical opening, fr an cil @humilier :ifa the, licttoin; und :i psdcsw, pin, niounccl in sai@L opening.

i. A railway xrucl pcdcsfsnl, coinprisir :i nicnxbcr rigidly counseled t@ rhs j0u i housing, and having a, vertical opsning, an oil chamber ai; this bov'mm; n 1P" permitting a, circulation the oil 'to lie i pc1- jgortion 0i? ills pedssml bearing; snai. pedestal pin, slidably mounted. in ing.

CL En n locomozivs truck of the icui L ypc, the ccmliinnicn two side fr,

uck psdcsul, coinprisi:

members, auch. @empi-rising tw@ veria plums, spaced apart, auf having; 30uur? ril lio,A` lined in -hcii cxcniling iruns'ver members; und springs, suppzired ille sida frame nicmbes anni housed in spaces between the Vertical pluies dieren said. springs suppni'ing' the truck bolsibcm JAMES iJLll NT,

curls; a rucii hols il@ Hic sid@ Y 

